Edottabd binabd



Aug. 28, 19 23. 7

1,466.44! E. BINARD I HIGH FREQUENCY SELF INDUCTION 0011,

Filed Au 27. 1 92} Patented Aug. 28, 19 23.

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p ma a mu crrfsmmnnccrron coin,

- Application fiIedjAugustM, 1921-; Serial Nos-$95 ,964.

'- Be it known that L-TEDOUARD' Brianna, a 7

subject 'of'thegKing of the Belgians,resid-- provements in High-Frequency Self-Incluc:

tion Coils (for which I have filed an appli-- cation in Belgium-,AuglO, 1920), of which. i

insulating substance'such as'paraflin for 'ex'-.

the following is a specification.

This-invention relates to a new-method of winding self-induction coils for" currents of highfrequency,of their-ind in which the jacent windings are disposed on a-rfiat-core, such, for instance, as ,one furnished with radially disposedgrooves, and inisuch manner that the wires cross in these grooves.

The objectofi the invention is to enable a coil of this kind to have the greatest possible number of turnso-n the core so that, for equal resistance, and whilst employing the same quantity. of winding wire, the seltinduction obtained is'much' greater than has heretofore been attainable. 1

The result is obtained, according to this invention, by causing the conductor, constituting the winding, instead of passing from one notch or gap to the next notch, as has heretofore been customary to pass to a notch further removed. Under these conditions the wire on one face of the supporting core traverses successively in front of several notches or gaps before passing through a notch to the other side of the core. The totalnumber of the notches is preferably so chosen that it comprises one notch more or less than a multiple of the number of notches forming the winding step, so that after winding a number of turns equal -to the number of the spaces passed over, the wire willhave passed through all the notches. 1

By reason of this method or" winding, the wires belonging to the different coils take, at each winding step, the form of achord of an arc corresponding in length to the spaces between the notches and arrange themselves on the two facesof the core in such .manner as to slightly increase the width of the core, but to considerably reduce its diameter as compared with other coils.

The accompanying drawings show, by way of example, a method of carrying out the invention.

Fig. 1 is a view, in elevation, of a disc of insulating material employed in conformity with the invention for the construction of the core. r

shows, diagrammatically the I h fkwindingf i winding the coils "instead of using an in sulated coreor plateprovided with needles or guiding pins for effecting;thei winding, which are removed afterithe completion of f the winding, andimmersing thelatterin an ample, asiscustomary, according to this in p vention a thin disc a" of nsulating material is used-in which notches-i b are cut, preferably radially, thus forming projections or fteethc. p V .t

- The insulated wirefior thetable jd' which is to constitute the winding, is passed',fby means. of a coil windingrmachine 'for example, through a first notch 1 and is then passed-over the face of the disc a past a certain number of teeth a and notches b the rear of the teeth c marked 1, 2, '3. It then passes through the notch lb, marked 4, -on to the rear face of the disc before passing over the front faces of the teeth 4, 5, 6, in

order to again pass tothe reanof thefdisc.

through the notch 7, and so on. The total number of the notchesor of the teeth is deter- V mined in the example shown, so as to be a multiple of the number ofnotches or of the teeth, constituting the number of teeth" passed over plus or minus one; it being evident that after winding a complete turn the wire. will pass from one side to the other of the disc a through the notch which precedes or follows immediately the notch from which the preceding winding commenced; aBy rea- 7 son of this disposition, the pointwhere the w1re or 'cable' of two successive windin s crosses, is displaced every time by one note disc, thus producing a coil of small diameter,

but having considerable thickness inasmuch as it has teeth and notches in-its coils.

In Fig. 2, to clearly illustrate the invention, it has been supposed that the wire is wound in a circular manner between the notches, but it is evident that in practice,

ples of the number owing to the tension of the wire, it takes, as

before stated, a straight :path across'the ing the filling of all of the slots beingthat the total-number of slots or: teeth are multiof slots or teeth comprising-a step. r r I What I claim is:

1. A high frequency self-induction coil comprising a form provided with radially disposed slots and a winding thereon, the

wire ofwhich winding passes alternatively overand under more than one slot before passing through a slot to-the other side of the plate.

2. A high frequency self-induction coil I comprising a form provided with radially disposed slots and a Winding thereon, the wire of which Winding passes alternatively over and under more than one slot before passing through a slot to the other side of the plate, the t-otal number of slots of the platethroughwhich the wires pass being one more or less than a multiple of the slots passed to form a winding step.

3. A high frequency self-induction coil comprising av form provided with a plurality of slots; forming teeth between them, and a wire passing through said slots alternately 7 from face toface of the form and extending the opposite face, with the turns at intervals past a plurality of the teeth at each stretch,

passing through slots between those through I which the preceding turns passed. I

In testimony whereof-:1 have aiiix'ed-in'y I signaturein presenceof two witnesses.

Witnesses p F. Y. ZALEAUP, EMILE GiZiNAnD.

EDOUARD BINARD. 

